Air-valve



(No Model.)

D.'R..BERRY.

AIR VALVE.

Patented Mar. 27, 1894.

VENTOR 7% AT'TRNEYS.

UNITED STATES ATENT' OFFICE.

DAVID BOSS BERRY, OF ROCKAWAY, NEW JERSEY.

AlR-VALVE.

SPECIFICATION- forming part of Letters .Patent No. 517,184, dated March27, 1894.

Application filed .Tune 21, 1893.

To aZZ whom, it may concern:

Be it known that I, DAVID Ross BERRY, a citizen of the United States,residing at Rock- "away, in the county of Morris and State of NewJersey, have invented certain new and useful Improvements in Air-Valves,of which the following is a specification.

This invention relates to air valves adapted for use on vessels orchambers holding air Io under pressure, and which through the medium ofthe valve may be detachably connected to the source of air supply, whensaid vessel or chamber is being charged. The valve device hereinafterdescribed is partic- 5 ularly adapted to be used in connection withpneumatic tires of bicycles.

In the drawings, Figure 1 is a sectional elevation of my improved valvedevice shown applied to` the pneumatic tire of a bicycle.

zo Fig. 2 is a sectional view of the valve and its case, detached. Fig.3 shows the split clamping sleeve, and Figs. 4 and 5 are a plan andelevation, respectively, of the valve follower.

The valve case a has its bore a', valve seat a? and chamber a o a commonaxis. The interior of the chamber a is screw threaded and in thischamber is snugly fitted the corresponding screw threaded follower b,the upper end of which is provided with a knurled 0 head b', by means ofwhich it is manipulated. This follower has a central bore and a valveseat 17 the lower part of the bore below the valve seat being enlargedto receive, and act as a guide for, plug c. This plugc has a Valveformed on its two ends and is of such a length that the upper valve isseated firmly in the valve seat of the follower b and the lower valveseated firnly in the valve seat of the case a when the follower b isscrewed down 40 in the chanber a as shown at Fig. 1. From the upper endof the plug c extends a rod or stern c', which passes through, and issomewhat longer than part of the central bore of the follower b abovethe valve seat 27 This 5 stern is provided with a button or flange c alittle larger in diameter than the bore of the follower. By thisarrangement the plug c is Suspended with its valves away from the valveseats a? and b when the follower b is partly nnscrewed from the'charnber a as shown at Fig. 2, and this is the arrangement of the partsof the device When the tube or Serial No. 478,327. (No model.)

chamber to which it is attached is being charged or infiated with air,the coupling or connection of the source of air supply then being fittedon the case a by its external screw thread.

To provide for the air passing freely through the device, slots ?9 b areformed in the top of the follower b, opening into the upper end of thebore, and slots b b transversely formed through the lower part of thefollower, extending therein nearly to the valve seat 6 Now upon theremoval of the air compressor or the coupling of the source of airsupply, 6 the pressure in the tube or chanber, inflated forces the plugagainst the seat 6 thereby preventing escape of air, both valves thenbeing firmly closed by screwing down the folx lower b, as beforedescribed. From the sides of the plug c project pins 0 0 which extendinto the slots b b of the follower b, and so cause the plug to berotated with the follower.

d is a cap for excluding dirt, &c., from the interior of the device.

The means here adopted for securing air Valves to the tires of bicyclesor toother-flexible connections of other air chambers, consists of thegrooved neck or coupling & of the Bo Valve case a, adapted to beinserted in the tubular neck e of the elastic tube e' the screw threadedsleeve f having a smooth bore to fit over the tubular neck e andprovided with slits f' f', and the nut g fitted to turn on the screwthread of the sleeve f, said screw thread being cut deeper at its upperend or made taper in form, so that the nut g, when forced down on thesleeve will contract it and cause it to press the tubular neck e tightlyagainst the grooved coupling a To fasten the elastic tube e' to a metaltire h of a bicycle, the lower end of the sleeve` f is formed with afiange f The sleeve passes through a hole in the tire h and said tire is9 5 clamped rigidly between the flangef and nut Or where a covering 'iis used to protect the elastic tube e', the fiange f of the sleeve thenpresses the edges of this covering against the metal tire h, when thenut g is screwed Ioo home, and at the time the tubular neck e is clampedbetween the sleevef and the grooved coupling pipe 60 I claim as myinvention- 1. The combination of the valve holding device having agrooved coupling neck, adapted to be inserted in a flexible tube, ascrew threaded sleeve, anda tightening nut.

2. The conbination of the valve holding device havinga grooved couplingneek, adapted to be inserted in a flexible tube, a split taper screwthreaded sleeve, and a tightenng nut.

3. The conbination of the valve holding device having a grooved conplingneck, adapted to be inserted in a fiexible tube, a plate or framethrough which the fiexible tube passes, a flanged screw threaded sleeve,and a tightening nut for securing the flexible tube and the valveholding device to the plate or frane.

4. The conbination of the valve holdin g device having a groovedcoupling neck, adapted to be inserted in a flexible tube, a plate orfrane through which the fiexible tube passes, a fianged split taperscrew threaded sleeve, and a tightening nut for securing the flexibletube and the valve holding device together, and to the plate or frane.

5. The combination of the valve case having ascrew threaded exterior anda central chamber and bore and a valve seat forned therein, acylindrical plug, having a valve formed on its end, a follower servingas a plug to close said chamber and having a central bore to guide andcontrol the valve plug, and adapted to force and hold the valve againstits seat, and a Gap screwing upon the exterior thread of the case.

6. The combination of the valve case, having a central chanber and boreand a valve seat forned therein, a cylindrical plug, having a valveformed on each of its ends, and a follower having a valve seat and acentral bore to guide and control the valve plug and adapted to forceand hold the Valves against their seats.

7. The conbnation of the valve case having a central chanber and bore,and a valve seat formed therein, a cylindrical plug, having a valveformed on its end a follower having a central bore to guide and controlthe valve plug, adapted to force and hold the valve against its seat,and a sten projecting from the valve plug through the follower, andhaving a button or flange on its upper end.

8. The conbination of the valve case, having a chanber and bore andvalve seat forned therein, a screw threaded follower in the chamber ofthe valve ease having a central bore and transverse slots at its lowerend, a plug with a valve forned on its end and having guide pinsarranged to work in the transverse slots of the follower.

9. The combination of the valve case, having a chamber and bore andvalve seat formed theren, a screw threaded follower in the ehanber ofthe valve case, having a central bore, a valve seat, and transverseslots at its lower end, a plug with a valve formed on each of its ends,having guide pins arranged to work in the transverse slots of thefollower, and a stem projecting from the valve plug through the followerand having a fiange or button on its upper end.

10. The comhination of the valve case, having a chamher and bore andvalve seat formed therein a screw th readed follower in the chamber ofthe valve case, having a central bore,'

a valve seat, transverse slots at its lower end, and transverse slotsopening into the upper end of the central bore, a plug with a valveformed on each ot' its ends and having guide pins arranged to work inthe lower transverse slots of the follower, a stern projecting from thevalve through the follower and having a flange or button on its upperend, and a cap fitting over the valve case'.

11. The conbination of the valve case, provided with a grooved couplingneck, and having a chanber and a bore and valve seat forned therein, ascrew threaded sleeve, a tightening nut therefor, a screw th readedfollower in the chanber of the valve case, having a central bore, avalve seat and transverse slots at its lower end, a plug with a valveformed on each of its ends, and having guide pins arranged to work inthe transverse slots of the follower, and a stem projectiug from thevalve plug through the follower and having a flange or button on itsupper end.

12. The conbination of the metal tire of a bicycle, the elastic tube ofa pnenmatic tire having a projecting air tube, a valve case providedWith a grooved coupling neck, a screw threaded sleeve provided With aflange, and a nut between which and the flange of the sleeve the metaltire is clamped.

13. The conbination of the metal tire of a bicycle, the elastic tube ofa pneunatic tire having a projeeting air tube, a cove'ing for theelastic tube, a valve case provided with a grooved conpling neck, asplit taper screw threaded sleeve provided with a flange, a nut betweenwhich and the flange of the sleeve the covering and the metal tire isclanped, at the same time the split sleeve is forced against the airtube on the coupling neck of the valve case.

In testimony whereofI have hereunto subscribed my name.

DAVID ROSS BERRY.

Witnesses:

EDWARD C. DAVIDSON, ALFRED W. VAN ZEE.

IOO

